Negativity of the Wigner function as an indicator of nonclassicality

2004/06/02 by Anatole Kenfack, Karol Zyczkowski · 3 citations
Physics and Astronomy · #quant-ph

paper · pdf · doi:10.1088/1464-4266/6/10/003

published as J. Opt. B: Quantum Semiclass. Opt. 6 (2004) 396-404 · 10 pages, 7 figures

arxiv created 2004/06/02 · arxiv updated 2009/12/01

Abstract

A measure of nonclassicality of quantum states based on the volume of the negative part of the Wigner function is proposed. We analyze this quantity for Fock states, squeezed displaced Fock states and cat-like states defined as coherent superposition of two Gaussian wave packets.

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